Advancements in Semiconductor Materials and Functional Devices of Organic Electrochemical Transistors
Organic electrochemical transistors play a crucial role in modulating the electronic structure and conductivity of conjugated films through ion-electron coupling,making them highly promising for the advancement of flexible smart electronics.This article provides a comprehensive overview of the organic electrochemical transistors by integrating electrochemical doping principle.It discusses the recent advancements in ion-electron coupling performance and mechanical characteristics such as stretchability,mechanical conformability,and bioviscosity.In addition,it summarizes the multifunctional applications of the organic electrochemical transistors,including their role in complementary logic circuits,biosensing,and bionic neural synapses.Furthermore,special emphasis is placed on research strategies,aimed at enhancing device performance and enabling multifunctionality through approaches like organic conjugated molecule design,interface modification,ion dynamics control,and device structure optimization,underscoring the versatility of OECTs in smart electronics.Finally,the key challenges and opportunities of organic electrochemical transistors are discussed in detail concerning integrated intelligent sensing devices for sensing-adaptation-feedback-processing and low-cost commercial preparation.